On 28 Ago, 11:59, (Geoffrey S. Mendelson) wrote:
wrote:
what exactly are "12 volt 6146B's" ?
6146B have 6.3V heater. What tube are you using exactly?

There were several variants with different heater voltages. I once
bought a bunch of them cheaply at a hamfest. If you were building
your own rig and could set the heater voltage, they were well worth
the price.


yes, I remember, but afair they had different "names", surely not
marked as 6146B.

73
Francesco IZ8DWF